Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
461699 (2005 QA161)
Classification: Main-belt Asteroid          SPK-ID: 2461699
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1005903945855103 1.4772e-07  
a 2.657988656502158 2.8325e-08 au
q 2.390620528740796 3.8838e-07 au
i 22.29708031714364 1.4471e-05 deg
node .2871895319086334 1.6182e-05 deg
peri 24.96465989549955 6.4097e-05 deg
M 118.9920393163523 5.555e-05 deg
tp 2458477.329173488032
(2018-Dec-24.82917349)
0.00024458 TDB
period 1582.807544323058
4.33
2.5301e-05
6.927e-08
d
yr
n .2274439500185516 3.6357e-09 deg/d
Q 2.925356784263521 3.1174e-08 au
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      5350 days (14.65 yr)  
   first obs. used      2005-08-26  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51141  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 04:18:43  

Additional Information
 Earth MOID = 1.40163 au 
 Jupiter MOID = 2.54386 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457472.5 (2016-Mar-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0988680655024507 1.4771e-07  
q 2.397065193255132 3.8735e-07 au
tp 2456891.842714391073
(2014-Aug-22.34271439)
0.00025384 TDB
node .3154696820371365 1.6171e-05 deg
peri 24.62522352645537 6.524e-05 deg
i 22.3012705142011 1.4474e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      5350 days (14.65 yr)  
   first obs. used      2005-08-26  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51141  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 04:18:43  

Additional Information
 Jupiter MOID = 2.54386 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.181703188679928E-14 -5.709389705506005E-14 -3.031493474525988E-11 1.560962119542861E-13 -7.813862107574847E-12 -1.535132090596193E-13
q -5.709389705506005E-14 1.500386909850701E-13 7.935155976950443E-11 -4.111819810341362E-13 2.049760838871529E-11 4.009243018670156E-13
tp -3.031493474525988E-11 7.935155976950443E-11 6.443690938861685E-8 -2.374549679717072E-10 1.604305021985599E-8 2.079454410413025E-10
node 1.560962119542861E-13 -4.111819810341362E-13 -2.374549679717072E-10 2.615167173399223E-10 -3.004924457230082E-10 -7.618369090543474E-11
peri -7.813862107574847E-12 2.049760838871529E-11 1.604305021985599E-8 -3.004924457230082E-10 4.256237331944637E-9 1.220831457384435E-10
i -1.535132090596193E-13 4.009243018670156E-13 2.079454410413025E-10 -7.618369090543474E-11 1.220831457384435E-10 2.095109010622739E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO460704  

461699 (2005 QA161)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-03-24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-25 04:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin